Heimat - A Chronicle of Germany

I have a problem that I am hoping someone can help me with.
We have the video series - Heimat A Chronicle of Germany (nine parts) and
part #1 is broken. I would very much like to replace just this tape not the
whole series. I have not been able to find a way to buy just the first video
of the series. Does anyone have any suggestions?
I apperciate your thoughts
Thanks
Katie McLaughlin
Trinity College
Media Services